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#include "ndpi_api.h"
#ifdef NDPI_PROTOCOL_LISP
#define LISP_PORT 4341
#define LISP_PORT1 4342
static void ndpi_int_lisp_add_connection(struct ndpi_detection_module_struct *ndpi_struct,
struct ndpi_flow_struct *flow,
u_int8_t due_to_correlation)
{
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_LISP, NDPI_PROTOCOL_UNKNOWN);
}
static void ndpi_check_lisp(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
{
struct ndpi_packet_struct *packet = &flow->packet;
u_int32_t payload_len = packet->payload_packet_len;
if(packet->udp != NULL) {
u_int16_t lisp_port = htons(LISP_PORT);
u_int16_t lisp_port1 = htons(LISP_PORT1);
if(((packet->udp->source == lisp_port)
&& (packet->udp->dest == lisp_port)) ||
((packet->udp->source == lisp_port1)
&& (packet->udp->dest == lisp_port1)) ) {
NDPI_LOG(NDPI_PROTOCOL_LISP, ndpi_struct, NDPI_LOG_DEBUG, "Found lisp.\n");
ndpi_int_lisp_add_connection(ndpi_struct, flow, 0);
return;
}
}
NDPI_LOG(NDPI_PROTOCOL_LISP, ndpi_struct, NDPI_LOG_DEBUG, "exclude lisp.\n");
NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_LISP);
}
void ndpi_search_lisp(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
{
struct ndpi_packet_struct *packet = &flow->packet;
NDPI_LOG(NDPI_PROTOCOL_LISP, ndpi_struct, NDPI_LOG_DEBUG, "lisp detection...\n");
/* skip marked packets */
if (packet->detected_protocol_stack[0] != NDPI_PROTOCOL_LISP) {
ndpi_check_lisp(ndpi_struct, flow);
}
}
void init_lisp_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id, NDPI_PROTOCOL_BITMASK *detection_bitmask)
{
ndpi_set_bitmask_protocol_detection("LISP", ndpi_struct, detection_bitmask, *id,
NDPI_PROTOCOL_LISP,
ndpi_search_lisp,
NDPI_SELECTION_BITMASK_PROTOCOL_UDP_WITH_PAYLOAD,
SAVE_DETECTION_BITMASK_AS_UNKNOWN,
ADD_TO_DETECTION_BITMASK);
*id += 1;
}
#endif
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